With the development of blockchain technology, research on digital currency is attracting more and attention, especially Central Bank Digital Currency (CBDC), which plays an important role in national economic construction. However, compared with existing cryptocurrencies, CBDC needs a controllable decentralization emphasized supervision. Therefore, critical part network architecture that saves computing resources, technical scheme line ecology, efficient consensus algorithms. In this paper,...

Fiber-based flexible sensors have promising application potential in human motion and healthcare monitoring, owing to their merits of being lightweight, flexible, easy process. Now, high-performance elastic fiber-based strain with high sensitivity, a large working range, excellent durability are great demand. Herein, we easily quickly prepared highly sensitive durable sensor by dip coating stretchable polyurethane (PU) fiber an MXene/waterborne (WPU) dispersion solution. Benefiting from the...

A graphene/nanowire Schottky junction is a promising structure for low-cost high-performance optoelectronic devices.

With the rapid growth of Internet Things (IoT), massive terminal devices are connected to network, generating a large amount IoT data. The reliable sharing data is crucial for fields such as smart home and healthcare, it promotes intelligence provides faster problem solutions. Traditional schemes usually rely on trusted centralized server achieve each attempted access from users data, which faces serious challenges single point failure, low reliability, an opaque process in current...

The all-solid-state single ion conducting polymer electrolyte has a bottleneck in ionic conductivity even though it can prevent concentration polarization. Here, lithium 3,3'-(diallylammonio)bis(propane-1-sulfonyl(trifluoromethyl sulfonyl)imide) (LiDAA(PSI)2) with symmetrical "one positive, two negative" structure and unsaturated double bonds for propagation, is synthesized. LiDAA(PSI)2 copolymerized 1,2-ethanedithiol poly(ethylene glycol) diacrylate via photoinitiated thiol-ene click...

A hybrid dual-frequency polarized reconfigurable terahertz antenna is designed and studied. Graphene TOPAS are employed as the polarization conversion metasurface dielectric substrate, respectively, enabling tunable circular polarization. a good substrate material for broadband THz components due to its low absorption. By adjusting chemical potential of graphene between 0 eV 0.5 eV, state in band 1 (0.76–1.02 THz) 2.5 (2.43–2.6 can be reconstructed. Thanks multilayer structure absorption...

In this study, we chose highly-elastic fabric fibres as the functional carrier and then simply coated with reduced graphene oxide (rGO) using plasma treatment, dip coating hydrothermal reduction steps, finally making a wearable strain sensor. As result, full-scale detection of human motions, ranging from bending joints to pulse beat, has been achieved by these sensors. Moreover, high sensitivity, good stability excellent repeatability were realized. The sensing performances economical...

Edge computing is a product of the evolution IoT and development cloud technology, providing computing, storage, network, other infrastructure close to users. Compared with centralized deployment model traditional edge solves problems extended communication time high convergence traffic, better support for low latency bandwidth services. With increasing amount data generated by users devices in IoT, security privacy issues environment have become concerns. Blockchain, technology developed...

We report a new strategy to engineer versatile SERS-active nanoparticles by embedding Raman reporter molecules inside Au-core/Ag-shell through layer-by-layer deposition of polyelectrolytes. The results demonstrate class core–shell that can find use as SERS-tags for Raman-based assays and imaging with strong SERS signals, versatility simplicity in synthesis, good stability. may also be useful the preparation plasmonic nanostructures other purposes.

The photovoltaic performance of axial and radial pin junction GaAs nanocone array solar cells is investigated. Compared with the cylinder nanowire arrays, arrays not only improve whole optical absorption but more importantly enhance effective (absorption in depletion region). enhanced attributed to downward shift extension region induced by shrinking top, which dramatically suppresses loss high-doped top enhances region. highest conversion efficiencies for are 20.1% 17.4%, obtained at a...

A silicon-on-insulator based optofluidic biosensor with integrated dual-channel Fabry–Pérot cavity is proposed for optical differential detection. detection limit of 5.5 × 10−8 refractive index unit experimentally demonstrated, owing to the high quality factor and detection, which can extract small signal efficient amplification greatly reduce system noise. Moreover, measurement features low cost compared that surface-plasmon-resonance sensor ring-resonator sensor.

All-optic scheme for polarization multiplexed system de-multiplexing were implemented with high-speed and precise optical tracking based on power difference. Stable demultiplexing 800rad/s scrambling 112Gb/s direct detection PM-RZ-DQPSK transmission over 960km was demonstrated.

Background: The aim of this study was to investigate the anti-cancer effects and mechanisms immunochemotherapy 5-fluorouracil (5-FU) interleukin-2 (IL-2) on non-small cell lung cancer (NSCLC) A549 cells. Materials Methods: In order detect whether 5-FU+IL-2 could effectively inhibit tumor growth in vivo, we established an A549-bearing nude mouse model. cytotoxicity natural killer (NK) cells evaluated using a standard chromium release assay. To evaluate relevance NK 5-FU+IL-2-mediated...

We optimized the performance of GaAs nanowire pin junction array solar cells by introducing AlGaAs/GaAs heterejunctions. AlGaAs is used for p type top segment axial junctions and outer shell radial junctions. The not only serves as passivation layers nanowires but also confines optical generation in active regions, reducing recombination loss heavily doped regions minority carrier at contact. results show that conversion efficiency can be greatly enhanced using instead GaAs. A maximum...

Abstract A graphene‐based dual‐band millimeter‐wave antenna is demonstrated. The fabricated on a high‐resistivity Si substrate covered with SiO 2 . monolayer graphene transferred onto the and acts as radiator. works at 28.1 GHz 37.4 GHz, return loss less than −10 dB. By applying DC bias, two bands exhibits regular variations. change mechanism of also analyzed. Particularly, this work approves potential in band by theory experiments, which could advance for real world applications.

A polyelectrolyte microcapsule-based layer-by-layer (LbL) technique has been widely used as a multifunctional vehicle for combined tumor therapy. Meanwhile, with the rapid development of tumour therapy, challenge designing drug delivery system attracted much more attention. Herein, we developed new type microcapsule (MC) called MPA@siRNA@DOX@MC, which conjugated siRNA and DOX well ICG-Der-02 (MPA) by electrostatic absorption. MPA indocyanine green (ICG) fluorescence dye, exhibiting high...

We propose a bidirectional reflective semiconductor optical amplifier (RSOA) based wavelength-division-multiplexing passive network (WDM-PON) utilizing differential phase shift keying (DPSK) signal for down-link and an on-off (OOK) re-modulated up-link with high extinction-ratio in both directions. A 20 km range colorless WDM-PON without dispersion compensation was demonstrated within low penalty 10 Gbit/s downstream 5 upstream signals. investigate the impacts of wavelength injection power...